JPH10162871A - Crimp connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To crimp lead wires of different diameters mixed with each other with a single connector. SOLUTION: A crimp connector comprises a housing main body 2 comprising plural contacts 2b formed as a fork-shaped crimp part on one end side, and a cable cover 4 to be locked to the housing main body 2 for crimping plural lead wires of different diameters mixed with each other with a base part from a fork-shaped tip part at the crimped part to be disposed on the crimped part of the contact 2b. The cable cover 4 comprises pressure parts 4e protruded in a roughly semi-circular form from the surface of a cover main body, where the radius of the semi-circular form is set roughly similar to or less than a radius of the lead wire of the smallest diameter of the plural lead wires.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a connector for pressure welding.

[0002]

2. Description of the Related Art A conventional press-connecting connector is formed by arranging a plurality of contacts each having a forked bifurcated portion which is fixedly mounted on an insulating housing body made of synthetic resin.
Lead wires are arranged on the contacts of the housing main body in a state orthogonal to the contacts, with the ends thereof aligned, pressed by a synthetic resin cable cover, and the lead wire coating is cut at the forked portion of the contacts. Thus, there is known an arrangement in which the core of the lead wire is sandwiched between the bases of the bifurcated portions of the contacts so as to make electrical contact with the contacts.

[0003] The lead wire is, for example, a flat ribbon cable or the like, and is usually pressed into contact with one housing body. Therefore, a plurality of lead wires have the same shape and the same diameter. The cable cover which pushes a plurality of these lead wires having the same diameter aligned into a contact having a forked portion has a lead contact portion formed in a flat body of a required width.

[0004]

However, if it is necessary to press-contact one housing body with a lead wire to be pressed against the housing having various wire diameters, the pressing action at the time of pressing is performed. There is an inconvenience that the holding portion of the lead wire abutting portion in the cable cover can correspond to only one type of lead wire and cannot be used as a cover. As described above, the conventional press-connecting connector has a problem to be solved in press-contacting a mixture of different types of lead wires.

[0005]

The gist of the present invention for solving the above-mentioned problems of the press-connecting connector according to the present invention is to provide a housing main body having a plurality of contacts whose one end is a bifurcated press-contact portion, A cable cover that is pressed against the forked part of the pressure contact part from the forked tip end to the base part and is locked to the housing main body, wherein a plurality of lead wires having different wire diameters are arranged at the pressure contact part. Wherein the pressing portion for pressing each of the lead wires is juxtaposed to project from the surface of the cover body in a substantially semicircular shape, and the radius of the semicircular shape is The radius of the lead wire having the smallest diameter among the plurality of lead wires is substantially equal to or smaller than the radius of the lead wire.

[0006] On the lead wire introduction portion side of the pressing portion,
A flat surface relief portion is formed; at both longitudinal ends of the cover body of the cable cover,
That is, a lock portion to be locked to the housing body is provided.

According to the press-connecting connector according to the present invention, the semi-circular radius of the pressing portion of the cable cover can be used even when a plurality of lead wires electrically connected by press-connecting have different wire diameters. Is approximately the same as or less than the radius of the smallest diameter lead wire among the plurality of lead wires,
The pressure welding is surely performed.

In addition, since the relief portion is provided on the lead wire introduction side of the pressing portion of the cable cover, it is possible to avoid collision with the expanded portion of the crushed lead wire covering portion pressed and crushed by the pressing portion at the time of pressing. .

[0009]

Next, an embodiment of a press-connecting connector 1 according to the present invention will be described in detail with reference to the drawings.
The housing body 2 in the press-connecting connector 1 is shown in FIG.
As shown in FIG. 4 to FIG. 4, a substantially inverted T-shaped insulator 2a made of synthetic resin and having a slender rectangular body and a flesh portion at a bottom portion 10 and a central portion 11 along the longitudinal direction, The bottom 1
0, a contact 2b inserted into a contact hole 12 drilled at a predetermined interval in parallel with the longitudinal direction of the contact 2b, and a through hole through which a bifurcated press contact portion 2c at the tip of the contact 2b is inserted. A spacer 3 made of synthetic resin, which is fitted and locked at the center of the housing body 2 to stably position the contact 2b;
and a cable cover 4 made of a synthetic resin which is fitted and positioned in press contact with the forked press contact portion 2c of FIG. Hereinafter, each component will be described.

In the insulator 2a of the housing body 2, side walls are provided on both ends in the longitudinal direction in a direction perpendicular to the insulator 2a, and projection-like engaging portions 2d are provided on the ends in the orthogonal direction. I have.

As shown in FIGS. 5 to 7, the contact 2b is entirely made of metal and has a bifurcated pressure contact portion 2c formed at the tip thereof, and is bent in a direction perpendicular to the flat portion of the pressure contact portion 2c. The central portion 2e and the rear end portion 2f are formed in an elongated body.

The central portion 2e is provided at the side edge thereof with a projection 2g for fixing when inserted into the hole 12 of the bottom portion 10 of the insulator 2a. The rear end 2f is, for example, inserted into a through hole of a printed circuit board and soldered.

As shown in FIG. 5 and FIG. 6, the two types of the forked pressing portions 2c are shown for different heights of the pressing portions at the same time. As shown in the figure, the press contact portions 2c are arranged in a staggered arrangement in which high ones and low ones are alternately arranged.

As shown in FIGS. 8 to 11, the spacer 3 is a slender rectangular body and has a plurality of protrusions 3a for locking to the side surface of the central portion of the insulator 2a, and press-contact of the contacts 2b arranged in a staggered arrangement. An insertion hole 3b is provided in a staggered arrangement corresponding to the portion 2c.

The spacers 3, 3 are inserted into the press-contact portions 2c of the contacts 2b, the rear ends 2f of which are inserted and held in the holes 12 at the bottom of the insulator 2a. By fixing the projection 3a to the central portion 11 and attaching it, the press contact portion 2c of the contact 2b is firmly held by the insulator 2a.

The cable cover 4 is shown in FIGS.
As shown in FIG. 7, an elongated rectangular body having a length of about 3 mm, a width of about 18 mm, and a width of about 2 mm is formed with a locking portion 4a having projections on both upper and outer ends, and a lower portion. Fitting projections 4b are provided at both ends.

Further, as shown in FIG.
In c, through holes 4d are provided in a staggered arrangement corresponding to the press contact portions 2c located in a staggered position. Further, the cover body 4c is juxtaposed at a position corresponding to each through-hole 4d so as to protrude from the surface of the cover body 4c in a substantially semicircular shape in the vertical direction, and the radius of the semicircular shape is the plurality of Pressing portions 4e which are substantially equal to or smaller than the radius of the lead wire having the smallest diameter among the lead wires are provided.

At the upper part of the semicircular pressing portion 4e, as shown in FIG. 13, a projection 4f for forming the pressing portion 4e in a semicircular shape is not provided up to the upper end surface of the cable cover. For example, it is arranged to be provided to a position about 0.5 mm forward from the end face.

As shown in FIGS. 12 and 13, a tangential direction connecting the semicircular bottom of the pressing portion 4e in plan view from the upper end surface of the projection 4f to the upper end surface of the cable cover. It has a flat surface, which is
The relief portion 4g allows the lead wire to be swelled by the pressing portion 4e.

As described above, the insulator 2a and the contact 2
If the press-connecting connector 1 configured by fitting and locking the cable cover 4 to the housing body 2 including the spacer b and the spacer 3 is used, the contacts arranged in a staggered manner on the housing body 2 as shown in FIG. 2b, a plurality of lead wires 13 having different wire diameters are attached to each of the bifurcated press contact portions 2c.
Are arranged with their tips aligned.

A cable cover 4 held by a pressure welding jig (not shown) is attached to the plurality of lead wires 13 as shown in FIG.
18 and as shown in FIG. Then, the semicircular pressing portions 4e of the cable cover 4 abut against the plurality of lead wires 13, respectively, and each of the lead wires 13 is further pushed from the front end portion of the press contact portion 2c of the housing body 2 to the base portion. .

Each of the lead wires 13 is
In step (2), the covering of the lead wire is cut at the forked claw portion, and the core wire slightly contacts the forked claw piece in the press contact portion 2c so as to push the gap outward.
Therefore, the core wire is sandwiched between the forked press contact portions 2c, and each lead wire 13 and each contact 2b are electrically connected.

On the other hand, the cable cover 4 is provided with a press-contact portion 2c of a contact 2b on the housing body 2 side corresponding to the staggered arrangement in each of the through holes 4d of the cover body 4c.
Are inserted, and the locking portions 4a at both upper ends in the longitudinal direction of the cover main body 4c are respectively locked by the locking portions 2d of the insulator 2a, so that the cable cover 4 is attached to the housing main body 2c.
Locked to.

At the same time, the fitting projections 4b at both ends in the longitudinal direction of the cover body 4c are inserted and fitted between the lower surface of the locking portion 2d of the insulator 2a and the upper surface of the bottom 10.

In the pressing operation of the lead wire 13, the semicircular pressing portion 4 of the cable cover 4 which presses and acts.
e is formed with a radius substantially equal to or smaller than the radius of the lead wire having the smallest wire diameter among the plurality of lead wires 13 having different wire diameters, so that lead wires 13 having different wire diameters are mixed. Even if the lead wires 13 are disposed, the respective lead wires 13 can be reliably brought into pressure contact with the housing main body 2.

Since the pressing portion 4e is formed in a semicircular shape having a radius substantially equal to or smaller than the minimum radius of the plurality of lead wires 13, the pressing portion 4e has a larger radius than the minimum radius. The lead wire has its covering portion crushed at the pressing portion 4e. However, as shown in FIG. 18, the lead wire returns to the original wire diameter outside the housing body 2 from the portion crushed at the pressing portion 4e. , The pressing portion 4
Since the relief portion 4g having a flat surface is provided on the upper side (lead wire introduction portion side) of the e, the thick lead wire 13
The bulge is allowed around the crushed portion in the range of the upper surface of the pressing portion 4e in the portion of the relief portion 4g. Therefore, the reaction force to the cable cover 4 due to the swelling of the thick lead wire 13 can be reduced.

As described above, the press-contact portion 4e of the cable cover 4 allows the press-connecting connector 1 to perform a press-contact operation by mixing a plurality of lead wires 13 having different wire diameters.

[0028]

As described above, the press-connecting connector according to the present invention is provided with a housing body having a plurality of contacts whose one end is a bifurcated press-fitting portion and a press-fitting portion of the contacts. And a cable cover engaged with the housing main body and pressing a plurality of lead wires having different wire diameters from the forked tip portion to the base portion of the pressure contact portion. In the cable cover, pressing portions for pressing the lead wires are juxtaposed so as to protrude from the surface of the cover body in a substantially semicircular shape, and the radius of the semicircular shape is the maximum of the plurality of lead wires. Since the radius of the lead wire is set to be substantially the same as or smaller than the radius of the small-diameter lead wire, an excellent effect that it is possible to perform the pressure welding work by mixing a plurality of lead wires 13 having different wire diameters is obtained. It is.

Further, since the relief portion having a flat surface is formed on the lead wire introduction portion side of the pressing portion, an excellent effect that the reaction force of the crushed lead wire can be reduced can be obtained. Things.

Further, since the lock portions are provided at both ends in the longitudinal direction of the cover body of the cable cover so as to be locked to the housing body, the cable cover is stably locked to the insulator. This is an excellent effect.

[Brief description of the drawings]

FIG. 1 is a press-connecting connector according to the present invention and is an explanatory view showing a state in which a cable cover is pressed against a housing body.

FIG. 2 is a front view of a housing main body in the press-connecting connector according to the present invention.

FIG. 3 is a bottom view of a housing main body of the press-connecting connector according to the present invention.

FIG. 4 is a half sectional view and a half side view of the housing main body taken along line XX in FIG. 2;

FIG. 5 is a plan view of a contact mounted on an insulator in the housing body.

FIG. 6 is a front view of a contact mounted on an insulator in the housing body.

FIG. 7 is an enlarged side view of a bifurcated press-contact portion of a contact mounted on an insulator in the housing body.

FIG. 8 is a plan view of a spacer mounted on an insulator in the housing body.

FIG. 9 is a front view of a spacer mounted on an insulator in the housing body.

FIG. 10 is a side view of a spacer mounted on an insulator in the housing body.

FIG. 11 is a sectional view taken along line YY in FIG. 9;

FIG. 12 is a plan view of a cable cover mounted on an insulator in a housing body of the press-connecting connector according to the present invention.

FIG. 13 is a front view of the cable cover attached to the insulator in the housing body.

FIG. 14 is a bottom view of the cable cover attached to the insulator in the housing body.

FIG. 15 is a side view of the cable cover attached to the insulator in the housing body.

FIG. 16 is a rear view of the cable cover attached to the insulator in the housing body.

17 is a sectional view taken along the line ZZ in FIG.

FIG. 18 is an explanatory view showing a press-connecting operation of the press-connecting connector according to the present invention.

[Explanation of symbols]

DESCRIPTION OF REFERENCE NUMERALS 1 press-connecting connector, 2 housing body, 2a insulator, 2b contact, 2c press-connecting portion, 2d locking portion, 2e center portion, 2f rear end portion, 3 spacer, 3a
Projection, 3b insertion hole, 4 cable cover, 4b fitting projection, 4c cover body, 4d through hole, 4e pressing portion, 4g relief portion, 10 bottom of insulator, 11 center of insulator, 12 bottom of insulator Holes, 13 lead wires.

Claims (3)

[Claims] 1. A housing body in which a plurality of contacts each having a forked contact portion at one end side are provided, and a plurality of lead wires, each having a different wire diameter and provided in a press contact portion of the contact, are provided. A cable cover that is pressed from the bifurcated tip portion to the base portion of the pressure contact portion and is locked to the housing body, wherein the cable cover presses each of the lead wires. Portions are juxtaposed to protrude from the surface of the cover body in a substantially semicircular shape, and the radius of the semicircular shape is substantially equal to or less than the radius of the smallest diameter lead wire among the plurality of lead wires. A press-connecting connector. 2. The press-connecting connector according to claim 1, wherein a relief part having a flat surface is formed on a side of the lead wire introduction part in the pressing part. 3. The press-connecting connector according to claim 1, wherein lock portions are provided at both ends in the longitudinal direction of the cover body of the cable cover to be locked to the housing body.